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Date: Thu, 24 May 2012 05:17:36 +0530
From: Thomas Abraham <thomas.abraham@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linus.walleij@...aro.org,
grant.likely@...retlab.ca, kgene.kim@...sung.com,
kyungmin.park@...sung.com, patches@...aro.org
Subject: [PATCH 2/3] pinctrl: add exynos4210 specific driver data for samsung pinctrl driver
Add information about the Exynos4210 pin banks, SoC specific configuration
callbacks and driver data which is used by the Samsung pinctrl driver.
Signed-off-by: Thomas Abraham <thomas.abraham@...aro.org>
---
drivers/pinctrl/Kconfig | 7 ++
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-exynos4.c | 211 +++++++++++++++++++++++++++++++++++++
3 files changed, 219 insertions(+), 0 deletions(-)
create mode 100644 drivers/pinctrl/pinctrl-exynos4.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index a6198c1..5acb90e 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -131,6 +131,13 @@ config PINCTRL_SAMSUNG
bool "Samsung pinctrl driver"
depends on OF
+config PINCTRL_EXYNOS4
+ bool "Pinctrl driver data for Exynos4 SoC"
+ depends on ARCH_EXYNOS4 && OF
+ depends on PINCTRL_SAMSUNG
+ select PINMUX
+ select PINCONF
+
endmenu
endif
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 35986ed..589498e 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -27,3 +27,4 @@ obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o
obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o
+obj-$(CONFIG_PINCTRL_EXYNOS4) += pinctrl-exynos4.o
diff --git a/drivers/pinctrl/pinctrl-exynos4.c b/drivers/pinctrl/pinctrl-exynos4.c
new file mode 100644
index 0000000..ed419b2
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-exynos4.c
@@ -0,0 +1,211 @@
+/*
+ * Exynos4 specific driver data for Samsung pinctrl and gpiolib driver.
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ * Copyright (c) 2012 Linaro Ltd
+ * http://www.linaro.org
+ *
+ * This file contains the Exynos4 specific driver data for the Samsung
+ * pinctrl/gpiolib interface drivers.
+ *
+ * Author: Thomas Abraham <thomas.ab@...sung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/gpio.h>
+
+#include "pinctrl-samsung.h"
+
+#define EXYNOS4_PIN_BANK(offset, __gpio, id) \
+ { \
+ .reg_offset = offset, \
+ .pin_base = (__gpio##_START), \
+ .nr_pins = (__gpio##_NR), \
+ .func_width = 4, \
+ .pud_width = 2, \
+ .drv_width = 2, \
+ .name = id \
+ }
+
+/* pin banks of pin-controller 0 */
+static struct samsung_pin_bank exynos4210_pin_banks0[] = {
+ EXYNOS4_PIN_BANK(0x000, EXYNOS4_GPIO_A0, "gpa0"),
+ EXYNOS4_PIN_BANK(0x020, EXYNOS4_GPIO_A1, "gpa1"),
+ EXYNOS4_PIN_BANK(0x040, EXYNOS4_GPIO_B, "gpb"),
+ EXYNOS4_PIN_BANK(0x060, EXYNOS4_GPIO_C0, "gpc0"),
+ EXYNOS4_PIN_BANK(0x080, EXYNOS4_GPIO_C1, "gpc1"),
+ EXYNOS4_PIN_BANK(0x0A0, EXYNOS4_GPIO_D0, "gpd0"),
+ EXYNOS4_PIN_BANK(0x0C0, EXYNOS4_GPIO_D1, "gpd1"),
+ EXYNOS4_PIN_BANK(0x0E0, EXYNOS4_GPIO_E0, "gpe0"),
+ EXYNOS4_PIN_BANK(0x100, EXYNOS4_GPIO_E1, "gpe1"),
+ EXYNOS4_PIN_BANK(0x120, EXYNOS4_GPIO_E2, "gpe2"),
+ EXYNOS4_PIN_BANK(0x140, EXYNOS4_GPIO_E3, "gpe3"),
+ EXYNOS4_PIN_BANK(0x160, EXYNOS4_GPIO_E4, "gpe4"),
+ EXYNOS4_PIN_BANK(0x180, EXYNOS4_GPIO_F0, "gpf0"),
+ EXYNOS4_PIN_BANK(0x1A0, EXYNOS4_GPIO_F1, "gpf1"),
+ EXYNOS4_PIN_BANK(0x1C0, EXYNOS4_GPIO_F2, "gpf2"),
+ EXYNOS4_PIN_BANK(0x1E0, EXYNOS4_GPIO_F3, "gpf3"),
+};
+
+#define EXYNOS4_PIN_BANK1(offset, __gpio, id) \
+ { \
+ .reg_offset = offset, \
+ .pin_base = (__gpio##_START) - EXYNOS4_GPIO_J0_START,\
+ .nr_pins = (__gpio##_NR), \
+ .func_width = 4, \
+ .pud_width = 2, \
+ .drv_width = 2, \
+ .name = id, \
+ }
+
+/* pin banks of pin-controller 1 */
+static struct samsung_pin_bank exynos4210_pin_banks1[] = {
+ EXYNOS4_PIN_BANK1(0x000, EXYNOS4_GPIO_J0, "gpj0"),
+ EXYNOS4_PIN_BANK1(0x020, EXYNOS4_GPIO_J1, "gpj1"),
+ EXYNOS4_PIN_BANK1(0x040, EXYNOS4_GPIO_K0, "gpk0"),
+ EXYNOS4_PIN_BANK1(0x060, EXYNOS4_GPIO_K1, "gpk1"),
+ EXYNOS4_PIN_BANK1(0x080, EXYNOS4_GPIO_K2, "gpk2"),
+ EXYNOS4_PIN_BANK1(0x0A0, EXYNOS4_GPIO_K3, "gpk3"),
+ EXYNOS4_PIN_BANK1(0x0C0, EXYNOS4_GPIO_L0, "gpl0"),
+ EXYNOS4_PIN_BANK1(0x0E0, EXYNOS4_GPIO_L1, "gpl1"),
+ EXYNOS4_PIN_BANK1(0x100, EXYNOS4_GPIO_L2, "gpl2"),
+ EXYNOS4_PIN_BANK1(0x120, EXYNOS4_GPIO_Y0, "gpy0"),
+ EXYNOS4_PIN_BANK1(0x140, EXYNOS4_GPIO_Y1, "gpy1"),
+ EXYNOS4_PIN_BANK1(0x160, EXYNOS4_GPIO_Y2, "gpy2"),
+ EXYNOS4_PIN_BANK1(0x180, EXYNOS4_GPIO_Y3, "gpy3"),
+ EXYNOS4_PIN_BANK1(0x1A0, EXYNOS4_GPIO_Y4, "gpy4"),
+ EXYNOS4_PIN_BANK1(0x1C0, EXYNOS4_GPIO_Y5, "gpy5"),
+ EXYNOS4_PIN_BANK1(0x1E0, EXYNOS4_GPIO_Y6, "gpy6"),
+ EXYNOS4_PIN_BANK1(0xC00, EXYNOS4_GPIO_X0, "gpx0"),
+ EXYNOS4_PIN_BANK1(0xC20, EXYNOS4_GPIO_X1, "gpx1"),
+ EXYNOS4_PIN_BANK1(0xC40, EXYNOS4_GPIO_X2, "gpx2"),
+ EXYNOS4_PIN_BANK1(0xC60, EXYNOS4_GPIO_X3, "gpx3"),
+};
+
+#define EXYNOS4_PIN_BANK2(offset, __gpio, id) \
+ { \
+ .reg_offset = offset, \
+ .pin_base = (__gpio##_START) - EXYNOS4_GPIO_Z_START,\
+ .nr_pins = (__gpio##_NR), \
+ .func_width = 4, \
+ .pud_width = 2, \
+ .drv_width = 2, \
+ .name = id, \
+ }
+
+/* pin banks of pin-controller 2 */
+static struct samsung_pin_bank exynos4210_pin_banks2[] = {
+ EXYNOS4_PIN_BANK2(0x000, EXYNOS4_GPIO_Z, "gpz"),
+};
+
+/* gpio range instance for pinctrl 0 */
+static struct pinctrl_gpio_range exynos4210_pctrl0_gpio_range = {
+ .name = "exynos4210_gpio_range0",
+ .id = 0,
+};
+
+/* gpio range instance for pinctrl 1 */
+static struct pinctrl_gpio_range exynos4210_pctrl1_gpio_range = {
+ .name = "exynos4210_gpio_range1",
+ .id = 0,
+};
+
+/* gpio range instance for pinctrl 2 */
+static struct pinctrl_gpio_range exynos4210_pctrl2_gpio_range = {
+ .name = "exynos4210_gpio_range2",
+ .id = 0,
+};
+
+/*
+ * Exynos4210 specific callback to translate PUD_xxx values into Exynos4210
+ * specific register values.
+ */
+static int exynos4210_xlate_pud(unsigned int pud)
+{
+ if (pud == PUD_UP)
+ return 3;
+ else
+ return pud;
+}
+
+/*
+ * Exynos4210 specific callback to translate DRV_xxx values into Exynos4210
+ * specific register values.
+ */
+static int exynos4210_xlate_drv(unsigned int drv)
+{
+ switch (drv) {
+ case DRV_3X:
+ return 1;
+ case DRV_2X:
+ return 2;
+ default:
+ return drv;
+ }
+}
+
+/*
+ * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes
+ * three gpio/pin-mux/pinconfig controllers.
+ */
+struct samsung_pinctrl_drv_data exynos4210_pinctrl_drv_data[] = {
+ {
+ /* pin-controller instance 0 data */
+ .ctrl = &(struct samsung_pin_ctrl) {
+ .grange = &exynos4210_pctrl0_gpio_range,
+ .pin_banks = exynos4210_pin_banks0,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0),
+ .base = EXYNOS4_GPIO_A0_START,
+ .nr_pins = EXYNOS4_GPIO_J0_START - 1,
+ .xlate_pud = exynos4210_xlate_pud,
+ .xlate_drv = exynos4210_xlate_drv,
+ .label = "exynos4210-gpio-ctrl0",
+ },
+ .pctl = &(struct pinctrl_desc) {
+ .name = "exynos4210_pinctrl",
+ .owner = THIS_MODULE,
+ },
+ }, {
+ /* pin-controller instance 1 data */
+ .ctrl = &(struct samsung_pin_ctrl) {
+ .grange = &exynos4210_pctrl1_gpio_range,
+ .pin_banks = exynos4210_pin_banks1,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1),
+ .base = EXYNOS4_GPIO_J0_START,
+ .nr_pins = EXYNOS4_GPIO_Z_START -
+ EXYNOS4_GPIO_J0_START,
+ .xlate_pud = exynos4210_xlate_pud,
+ .xlate_drv = exynos4210_xlate_drv,
+ .label = "exynos4210-gpio-ctrl1",
+ },
+ .pctl = &(struct pinctrl_desc) {
+ .name = "exynos4210_pinctrl",
+ .owner = THIS_MODULE,
+ },
+ }, {
+ /* pin-controller instance 2 data */
+ .ctrl = &(struct samsung_pin_ctrl) {
+ .grange = &exynos4210_pctrl2_gpio_range,
+ .pin_banks = exynos4210_pin_banks2,
+ .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2),
+ .base = EXYNOS4_GPIO_Z_START,
+ .nr_pins = EXYNOS4_GPIO_Z_NR,
+ .xlate_pud = exynos4210_xlate_pud,
+ .xlate_drv = exynos4210_xlate_drv,
+ .label = "exynos4210-gpio-ctrl2",
+ },
+ .pctl = &(struct pinctrl_desc) {
+ .name = "exynos4210_pinctrl",
+ .owner = THIS_MODULE,
+ },
+ },
+};
--
1.6.6.rc2
--
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